Gr. Myth. a son of Theseus: when he rejects the love of his stepmother, Phaedra, she turns Theseus against him by false accusations, and at Theseus' request, Poseidon brings about his death
See Hippolytus in American Heritage Dictionary 4
noun Greek Mythology
A son of Hippolyta and Theseus who was killed by Poseidon.